<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <script type="text/javascript" src="../js/vue.js"></script>
    <title>列表排序</title>
</head>
<body>
    <div id="root"> 
        <button @click="updateMei">更新马冬梅信息</button>
        <li v-for ="(p, index) in persons" :key="index">
            {{p.name}}-{{p.age}}
        </li>

    </div>
    <script type="text/javascript">
        const vm = new Vue({
            el:"#root",
            data(){
                return {
                    persons:[
                        {id:"001", name:"马冬梅", age:"18",sex:"女"},
                        {id:"002", name:"周冬雨", age:"19",sex:"男"},
                        {id:"003", name:"周杰伦", age:"20",sex:"女"},
                        {id:"004", name:"温兆伦", age:"21",sex:"男"}
                    ],
                }
            },
            methods:{
                updateMei(){
                    // this.persons[0].name="马老师" //更改生效
                    // this.persons[0].age="50"//更改生效
                    // this.persons[0].sex='男'//更改生效

                    this.persons[0] = {id:"001", name:"马老师", age:"50",sex:"男"}  //页面数据并未发生修改
                }
            }
        })
    </script>
</body>
</html>